• Journal of Ginseng Research
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• 제33권3호
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• pp.240-243
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• 2009

원료삼 생산에 있어 총수익(R)을 결정하는 4요인 승법 모형을 설정하고 (R=AYQP) 세 농가의 수납실적 수치를 사용하여 총수익 결정식임을 확인하였다. 4요소는 자본요소인 재배면적(A), 기술요소인 단위수량(Y)과 가중평균 품질등급(Q) 그리고 시장요소인 평균등급 가격(P)의 3요소로 해석하였다. 기술요소인 YQ는 자본(A)과 수익(R)의 직선모형에서 기울기가 되어 단위자본의 수익창출계수임을 밝혔다. 수익결정식은 인삼산업의 발전이 재배수량과 품질 향상기술 YQ를 증대시켜 면적(A)을 감소시킴으로서 수익(R)을 높여 시장가격(P)을 낮추는데 있음을 보여주었다.

• 한국농공학회지
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• 제23권1호
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• pp.86-102
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• 1981

The soil test data of 28 earth dams, scheduled to be constructed in Kore3, were selected for this study. The safety factors of their side slops were computed using Fellenius' "slice Method" by computer. The results summarized in this study are as follows; 1. Dam sections can be easily determined by fig.10 without a time consuming trial and error calculations of assumed sections. 2. For the economical design of earth dam sections, it was found that more cohesive soil was suitable for lower dams(dam height less than 25m) and soils with a higher friction angle was better for higher dams 3. In the case that used soil materials have the same Internal friction angle, side slope increase was almost same. 4. The relationship between side slope and friction angle was found as log.S=a tan ø+b (Fig. 7) 5. The relationship between side slope and cohesion (c) was also found as log. S=a c+b (Fig. 8) 6. The change of safety factors due to the change of central core materials was very little (Table-2) 7. The decrease of safety factors according to the unit weight increase of embankment materials was negligible. 8. In general the relationship between the wet unit weight and the saturated unit weight was r sat = (rt)$^2$+0. 140. This study will contribute to the determination of economic and safe planning and designing of earth dams, embankments and cutting side slopes.

• 한국보육지원학회지
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• 제13권2호
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• pp.81-96
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• 2017

Objective: The purpose of this study is to present a detailed view of the self-regulation of 5-year-old children based on parental attitudes and consistency. Methods: The research was conducted among 144 pairs of parents (288 people) of 5-year-old children residing in Seoul. Results: The resultsare as follows. First, with regards to self-regulation based on a child'sgenderand mother's parental attitudes, sub-factors such as parental attitudes and parental interaction were found to have significant effects on self-determination. Also,parental attitudes and parental interaction were found to have significant effects on the sub-factors of self-monitoring, such as self-evaluation and self-determination and the sub-factors of self-regulation, such as behavioral inhibition and emotionality. Second, the percentage of parents whose parental attitude was consistent at 58.3%, which is higher than the percentage of parents whose parenting attitude was inconsistent at 41.7%. The results of self-regulation were significantly higher when parental attitudes were consistent than when they were inconsistent. Conclusion/Implications: This research is significant in that it offered a concrete view of parental attitudes and consistency status that affect child's self-regulation.

• 한국도로학회논문집
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• 제13권3호
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• pp.167-176
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• 2011

본 연구는 불특정 다수의 도로이용자들이 경로우회 시 갖는 의사결정과정속에 내포된 비선형성과 불확실성을 고려한 정도 있는 모형구축으로 주요 우회결정요인을 분석하는 것이 주요 목적이다. 이를 위하여 고속도로 및 국도를 이용하는 운전자를 대상으로 우회여부에 관련된 SP조사를 실시하였고, 조사결과에 대하여 의사결정나무와 신경망이론의 결합된 모형을 구축하여 운전자 우회결정요인을 분석하였다. 분석결과 운전자 우회여부결정에 영향을 미치는 요인은 우회도로 인지여부, 교통정보 신뢰도 및 이용빈도, 경로전환빈도, 나이순으로 나타났다. 또한 오분류표를 통한 기존 모형과의 예측력의 비교결과 결합된 모형의 오분류율이 8.7%로 기존 모형인 로짓모형 12.8%, 의사결정나무 단독 모형 13.8%와 비교했을 때 가장 예측력이 높은 것으로 나타나 운전자 우회결정요인 분석에 관한 모형의 적용 타당성을 확인할 수 있었다. 본 연구의 결과는 향후 교통량 분산효과와 도로망 효율 증대를 위한 효과적인 우회관리전략 수립 시 기초 자료로 활용가능하리라 사료된다.

• Fisheries and Aquatic Sciences
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• 제4권3호
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• pp.144-149
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• 2001

In other to establish the exact determination method of amino nitrogen (AN) in salt-fermented fish sauces, we determined the AN in fish sauces according to the measuring methods and also investigated the main factors influencing on determination method of AN. AN in salt-fermented anchovy sauce increased linearly as fermentation progressed, and was shown the highest amount measuring by the Formol method, followed by the trinitrobenzene sulfonic acid (TNBS) method and the Copper-salt method. AN concentration in anchovy sauces fermented for 12 months was $88.2\%$ and $77.6\%$ for the TNBS method and the Copper-salt method, respectively, on the basis of Formol method. The ratio of AN/total nitrogen (TN) in anchovy sauce fermented for 12 months was higher than that in commercial anchovy sauces. The determination of AN in anchovy sauce by the TNBS method was not affected by salt concentration, and slightly affected by heating. The effect of MSG on AN contents by Copper-salt method was shown higher than those by the Formol method and the TNBS method. The TNBS method was adaptable to measure the content of AN in fish sauce by this study.

• 한국생산제조학회지
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• 제24권6호
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• pp.653-659
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• 2015

The aim of this study is to develop a technique for the accelerated life test of the capacitor in a propulsion control device of a traction inverter used for a high-speed train. Using this technique, the accelerated life test can possibly estimate the life cycle of a capacitor under various temperature conditions and irregularly applied voltage. The accelerated life test is conducted for the capacitor of the traction inverter. The common proceedings of this test are selection of failure mechanism, determination of accelerated stress, range determination of the accelerated stress, determination of the test condition, and distribution and determination of the sample. From this result, the continuous applied voltage was not considered for the acceleration factors anymore. Therefore, the final result having an acceleration factor of 9.4 (= 13,626/1,445) was observed. Furthermore, the life-shortening acceleration effect for the irregular applied voltage condition can be applied to various situations.

• Bulletin of the Korean Chemical Society
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• 제17권11호
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• pp.995-999
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• 1996

A method for the determination of cobalt(Ⅱ) by differential pulse voltammetry using a carbon paste electrode constructed by incorporating 1-(2-pyridylazo)-2-naphthol(PAN) into a conventional carbon paste mixture composed of graphite powder and Nujol oil has been developed. Several influencing factors for the determination of cobalt(Ⅱ) were studied in detail and the optimum analytical conditions were found to be as follows: pH, 4.6; composition of electrode, 20%; temperature of deposition, 43 ℃; time of preconcentration, 15 min. Regeneration of the electrode surface for the continuous uses of the electrode was achieved by exposing the carbon paste electrode to an acidic solution. Response of the electrode was reproducible for the uses of five times and the relative standard deviations were 6.7 and 4.6% for 2.0×10-5 M and 4.0×10-6 M cobalt(Ⅱ), respectively. The calibration curve for cobalt(Ⅱ) obtained by differential pulse voltammetry was divided into two linear ranges of 1.7× 10-6-1.3×10-4 M and 2.0×10-7-8.0×10-7 M. The detection limit was estimated to be 1.3×10-7 M. The effects of coexisting ions were also investigated to test the applicability of the proposed method to the determination of cobalt(Ⅱ) in real samples.

• 경영과학
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• 제11권2호
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• pp.237-253
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• 1994

Technology measurement is related with how to construct indicators of technological change and relative ranking of technological sophistication. Many attempts have been made to understand the measurement of technology. However, technology measurement still remains little understood problem in spite of its importance. This article is concerned with improving the measurement of technology by introducing market factors into the model. It illustrate a simple approach to the measurement of technology. This approach is based on the characteristic-space paradigm of technology. A relative ranking of technological sophistication for a product is measurable as a set of characteristics. The main feature of the proposed approach is the combination of technical factors and market factors. Technical factors are reflected in the definition of technological sophistication. Market factors are embraced in the determination of the relative importance assigned to each technology defining characteristics. Thus, the weight is determined by technical factors and market factors, which differentiates the study from the past based on judgmental technique such as experts' opinion.

• 한국건설관리학회논문집
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• 제5권5호
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• pp.93-100
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• 2004

For accurate construction contract time estimation, few parameters are more significant than crew production rates and factors affecting the rates. However, statistical analysis techniques for finding such factors are not always simple mainly because there are many factors and the interaction between factors is not well quantitatively understood. This paper presents methodology of identifying factors driving crew production rates. The methodology is further demonstrated with representative data collected by the author from 13 on-going highway constructions. Three factors were identified as statistically significant drivers of Cap crew production rate: 'Cap Size (m3/ea)'; 'Cap Length (m)'; and 'Cap Shape (Rectangle vs. Inverted 'T')'. It was also found that the production rates are best explained by a multiple regression model with two of the drivers; 'Cap Size' and 'Cap Shape'.

• 재활복지
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• 제17권4호
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• pp.221-244
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• 2013

본 연구는 중증장애인을 대상으로 자립생활의 구성요인 중 자기결정권과 역량강화가 공동체 관계 및 생산성에 어떻게 영향을 미치는지 탐색적으로 검증하였다. 이를 위해 2012년 5월부터 7월까지 약2개월에 걸쳐 장애인자립생활센터 및 인권센터 이용 장애인을 대상으로 자료를 수집하였다. 연구결과 첫째, 장애인의 자기결정권 수준은 연령, 학력, 배우자 유무, 수급 여부, 월소득 유무, 거주형태, 장애 발생시기, 장애등급 등의 변인에 따라 유의미한 차이가 나타났고, 역량강화 수준에서는 학력과 장애등급 등의 변인에 따라 유의미한 차이를 보이는 것으로 나타났다. 둘째, 장애인의 공동체관계 형성 수준은 연령, 학력, 배우자 유무, 거주형태, 장애 발생시기, 장애등급 등의 변인에 따라 유의미한 차이를 보이는 것으로 나타났고, 생산성 수준에서는 학력, 배우자 유무, 수급 여부, 월소득 유무, 중복장애 여부, 장애등급 등의 변인에 따라 유의미한 차이를 보이는 것으로 나타났다. 셋째, 장애인의 자기결정권과 역량강화가 공동체관계에 미치는 영향을 살펴본 결과, 자기결정권, 역량강화 변인 모두 장애인들의 공동체관계에 유의미한 정(+)적 영향을 미치는 것으로 나타났다. 넷째, 장애인의 자기결정권과 역량강화가 생산성에 미치는 영향을 살펴본 결과 역량강화 변인만이 장애인들의 생산성에 유의미한 정(+)적 영향을 미치는 것으로 나타났다. 따라서 향후 장애인의 공동체관계 및 생산성을 높여 자립생활을 영위해나가기 위해서는 자기결정권과 역량강화가 중요한 변수임을 확인할 수 있었다. 이를 위해서는 사회복지실천 및 재활과정에서 자기결정권 및 역량강화의 중요성을 인식하고, 이와 관련된 다양한 프로그램을 개발하고 활성화 시켜나가야 할 것이다.